package online.hxstar.learn.tcp.nodecoder;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

import java.nio.charset.StandardCharsets;
import java.util.logging.Logger;

/**
 * @author huxing
 * @date 2018-12-14 9:52
 * @describe
 */
public class TimeClientHandler extends ChannelHandlerAdapter {


    private static final Logger logger = Logger.getLogger(TimeClientHandler.class.getName());


    private int counter;
    private byte[] req;

    public TimeClientHandler() {
        String str = "QUERY TIME ORDER" + System.getProperty("line.separator");
        this.req = str.getBytes();

    }

    //TCP链路建立成功
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        ByteBuf message = null;
        for (int i = 0; i < 100; i++) {
            message = Unpooled.buffer(req.length);
            message.writeBytes(req);
            ctx.writeAndFlush(message);
        }
    }


    //读取通道数据
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        byte[] req = new byte[buf.readableBytes()];
        buf.readBytes(req);
        String body = new String(req, StandardCharsets.UTF_8);
        System.out.println("Now is :" + body + ";the counter is :" + ++counter);
    }


    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        logger.warning("Unexpected exception from downstream:" + cause.getMessage());
        ctx.close();
    }

}
